I got yesterday the hero rc h991 same as the v911 and it flies good only problem is then the tail wants to spin right alot I have trim it all the way left anyway to center the servo out so the trim is in the middle.

It came with extra blades & what not. But my problem is I had to adjust my tx all the way forward in order for it to hover in one spot, I suppose the bigger 200 mah batt is the reason. Is there anyway I can adjust it manually on the heli?

It came with extra blades & what not. But my problem is I had to adjust my tx all the way forward in order for it to hover in one spot, I suppose the bigger 200 mah batt is the reason. Is there anyway I can adjust it manually on the heli?

You can mechanically trim it. I think Daryoon's blog still has detail instructions. Or search the thread. Basically you adjust the lengths of the servo rods while having the tx trim at neutral.

. Basically you adjust the lengths of the servo rods while having the tx trim at neutral.

I seem to everything under control except I need serious trip to keep it from turning right. Here are his instructions:

Quote:

Mechanical trimming
Step 2: Trim out the forward or backwards movement of the heli.

Pop off the servo linkage responsible for forward and backwards flight. You can simply move the remote stick forward and backwards to so you can determine which servo linkage is responsible for the forwards and backwards movement of the heli.

If the helicopter moves forwards. Then you have to lengthen the linkage to give it some backwards trim. Simply turn it counter clockwise to lengthen the linkage. I find that on the 9958, you can do a complete full turn or half turn. How many turns clockwise depends on how much trim you need. Just roughly guess. I'll start with 5 complete turn if there's a lot of forward momentum.

Conversely, if you the helicopter moves backwards. You shorten the linkages by simply turn the linkage clockwise.

Step 3. Trim out the left or right movement of the heli.
The concept is the same as the above.

If your heli is moving too much to the left. Twist counter clockwise to lengthen the servo linkage.

Conversely, if your heli is moving too much to the right. Twist clockwise to shorten the servo linkage.

Images

I just received my bnf replacement and it has a bad wobble which starts when I give hard up elevator or hard aileron. Hover has less and FF none. The fly bar doesn't bounce quite as freely as my previous "RIP" V911. Iv loosened the FB screw, oil in the right places..

Suggestions?

I cant believe no one else has a wobble issue. Two out of the five V911's I received have it.
I was thinking about sending them back.. But I have yet to receive credit or a replacement for one I sent in a while back because it was old style. Cant quite decide who I dislike the most.. Tmart or banggood.

I seem to everything under control except I need serious trip to keep it from turning right. Here are his instructions:

I'm not sure exactly what I'm twisting clockwise.

Oh, and 2 batteries isn't nearly enough

does the tail of the heli start turning when you don't want to? or the whole heli it self moves to an angle?

Here is what I did, with the heli on using the right control move it left & right..that should tell you which servo does what & once you have that down pop the little turnbuckle off & adjust screwing it either clockwise or counterclockwise

Dferry, when performing mechanical trims, you're turn and twisting the top black portion of the linkage rod. If you look at the linkage rod, the lower part is connected to the servo. The top portion looks like a round ring. When adjusting, you need to pop the ring off the swash plate, then turn the ring in full rotations (360°) and then reattach it to the swash plate.